For each of the pairs of words below, insert a word in the blank space between them to form two separate words such that the inserted word finishes the first word and begins the second.
For example, given "MAN ____ ON", you would insert the word "GO" to form "MANGO" and "GOON".

Rohan and Dravid were preparing to have a water balloon fight. "No Fair" cried Rohan, "You have 3 times as many as I do!" Dravid said "Fine!" and gave Rohan 10 more balloons. "Still not fair!" argued Rohan, "You still have twice as many as I do."

How many more balloons must Dravid give Rohan for them to have the same number?